16.20 - Example: Adding a PRIMARY KEY Constraint to a Table - Teradata Database - Teradata Vantage NewSQL Engine

Teradata Vantage™ SQL Data Definition Language Syntax and Examples

Product
Teradata Database
Teradata Vantage NewSQL Engine
Release Number
16.20
Published
March 2019
Content Type
Programming Reference
Publication ID
B035-1144-162K
Language
English (United States)
Last Update
2019-05-24

table_1 must not already have a defined PRIMARY KEY constraint. Constraint name primary_1 must not duplicate an existing constraint name in table_1.

     ALTER TABLE table_1
       ADD CONSTRAINT primary_1 PRIMARY KEY (column_1, column_2);

column_1 and column_2 must be NOT NULL or an error is returned.